Lighting apparatus.



E. J. MADDEN.

LIGHTING APPARATUS.

APPLICATION FILED JAN. a. 1913.

Patented Aug. 19, 1913.

MZLZLJZ/GS s 63. I721) (an/60 7': m Edzuara Jfladdau 476m Q g i TJNITD PATENT fitlllilo EDN'ARD J. MADDEN, OF BRIDGEIORT, CONNECTICUT, ASSIGNOR TO HAWTHORNE MANUFACTURING COMPANY, INC., OE BRIDGEPORT, CONNECTICUT, A GGBPORA- TION OF CONNECTICUT.

LIGHTING APPARATUS.

Application filed January 3, 1913.

To all whom it may concern:

Be it known that I, Emvnnn J. MADDEN, a citizen of the United States, and a resident of Bridgeport, county of Fairfield, State of Connecticut, (whose post-office address is 35 Spruce street, Bridgeport, Connecticut,) have invented an Improvementin Lighting Apparatus, of which the following description, in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts.

This invention relates to retaining devices for lenses, lens mirrors, plain glass fronts and other similar parts of a lamp.

The invention will be best understood by reference to the following description when taken in connection with the accon'ipanying illustration of one specific embodiment thereof, while its scope will be more particularly pointed out in the appended claims.

In the drawings: Figure 1 is a side elevation of a lamp, part of it being shown in section and illustrating the application thereto of one form of my invention; Fig. 2 is a transverse section in elevation taken on the line 22 in Fig. 1; and Fig. 3 is a sectional elevation showing details of the parts which hold the glass front in position.

Referring to the drawings and to the embcdiment of my invention which I have there shown, for illustrative purposes I have disclosed the same as applied to a typical form of automobile lamp 1, although it is to be understood that the same is not limited in its practical application to any particular type of lamp.

The lamp 1 isprovided with any suitable light-giving element (not shown) and suitable reflecting devices whereby the light is thrown through the glass front 2, which latter may be in the form of a lens, if desired. The glass front is mounted in the casing 1, preferably in a door-frame 3 provided with a suitable seat t for the glass front and also provided with an annular groove 5 which forms a seat for the glass retaining means. The glass-retaining means herein comprises an annular flange 6, the edges of which have been cut back along radial lines to form the resilient feet 7 the intermediate metal of the flange having been partly removed be tween adjacent feet to provide separating spaces. The end of each foot is curled or beaded over to form a curved edge or beading 8, which latter is adapted to fit and seat Specification of Letters Patent.

Patented ring. 119, 1913.

Serial No. 739,946.

in the annular groove The resilient feet upon the retaining flange 6 are so proportioned that when the glass is placed. in position against its seat, the flange may be pressed down over the same and the curved edges or heading upon the feet snapped into the annular groove, serving thereby to hold the glass rigidly in position. The flange can be removed for the withdrawal of the glass from the casing by loosening a number of the feet, which is readily done by prying back the upturned edge of the feet with any suitable implement.

The retaining devices described may be employed in connection with a light-directing shell or similar member through which the light is intended to pass. It may thus be employed for simultaneously holding in position a glass front, lens or reflector and a light-directing lamp member such as a reflector or other member. In the lamp shown in Fig. 1 the retaining member is e iployed not only to hold the glass in position, but also to fix in place the member 9. The latter is in the form of an inwardly converging, cone-shaped shell through which the light passes, the flange (3 being preferably formed as an integral part of the shell. The same unitary member therefore, serves to hold the glass and the member in position. This provides a very effective method of fastening the glass rigidly in position. The resilient beaded feet not only hold the glass firmly against movement, but the flange may be somewhat inclined so that the pressure against the glass comes along the edge of the flange at its junction with the member 9, thereby bringing the pressure directly opposite the seat 4- upon which the glass rests. This avoids any rattling and also applies the pressure where the glass is relieved of any leverage tending to break it.

It is obvious that the invention may be utilized and substantially the same construction employed in holding the reflecting mirrors or lenses and reflecting or other lamp members which are located adjacent the said lenses.

V'Vhile I have herein shown and described for illustrative purposes one specific form of the invention, it is to be understood that the same is not limited to the details of construction or to the form or relative a'rrangement of parts herein, but that extensive deviations may be made therefrom without departing from the spirit of the invention.

What I claim as new and desire to secure by Letters Patent is- 1. The combination with a lamp casing of a door frame therefor, a glass front for said door frame, the latter presenting a seat for said glass front and an adjacent annular groove, a member having a flange adapted toseat against said glass front, said flange having resilient feet out from the edges thereof along radial lines, said feet having beaded edges to fit said annular groove.

2. The combination with a lamp casing of a glass front therefor, said casing having a seat for said glass front and an annular groove adjacent the same, and means for retaining said front in position comprising a glass retaining flange having radial resilient feet adapted to seat in said groove.

3. The combination with a lamp casing of a glass front therefor; and means for retaining said glass front in position comprising an annular groove in said casing, and a light directing shell member provided ,with a glass retaining flange seated in said groove.

l. The combination with a lamp casing of a glass front therefor; and means for retaining said glass front in position comprising an annular groove in said casing, and a light directing member provided with a glass retaining flange yieldingly seated in said groove.

5. In a lamp, the combination with a support provided with a seat, of a body seated in said support, said support having also an annular groove, a retaining member for said body comprising an annular flange adapted to press against said body, and a plurality of resilient feet adapted to enter and seat in said annular groove.

6. In a lamp, the combination with a support provided with a seat, of a body seated in said support, said support having also an annular groove, a retaining member for said body comprising an annular flange adapted to press against said body, and a plurality of resilient feet having beaded edges adapted to enter and seat in said annular groove.

7. The combination with a lamp of a support provided with a seat, a body seated in said support, said support having an annular groove, a light-directing shell adapted to seat against said body, said shell being provided with a plurality of radial beaded retaining devices adapted to enter in and seat in said groove.

8. In a lamp, the combination with a support, of a body seated in said support, a cone-shaped light-directing shell seated against said body, and radial retaining means on said shell engaging said support.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

EDIVARD J. MADDEN.

Witnesses E. I'IORACE HAWTHORNE, DUDLEY M. MORRIS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C. 

